Check out rsync.net, it allows you to use git and ssh on its storage infrastructure. Create bare repos there and you can push/pull just like from github: https://blog.kozubik.com/john_kozubik/2010/02/git-and-subver...

You won't get any server side CI/hooks or even multi user management, but if you just want a central place to push and pull your private code it's perfect.